Hello!

So in PS CS6 I am able to create a 3d sphere from a 2d image/layer. Now is it possible to reverse this process, and instead you would be able to draw on a 3d sphere and change the image into a 2d one of (for example) 1024x512 dimensions?

PS CS6
2d image -> 3d image (yes)
3d image -> 2d image (maybe?)

Thank you!

Yes. I made a guide on it a long time ago.

Would not recommend doing that because it's hard to get your bearings on a sphere, however you can use it to fix a small problem or something like that.

http://forum.toribash.com/showthread.php?t=314212